Sadarman, IrawanA., HidayatC., Elfawati, SholikinM. M., HarahapR. P., RusliR. K., SolfaineR., SofyanA., Nahrowi and JayanegaraA. (2021) “Propolis Supplementation on Broiler Chicken Performances, Nutrient Digestibility, and Carcass Characteristics: A Meta-Analysis”, Tropical Animal Science Journal, 44(4), pp. 425-433. doi: 10.5398/tasj.2021.44.4.425.